geological
Showing 81–100 of 100 results
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Geological Specimens
Pumice from Santorini
Mohs hardness: 5.5–6$32.72 -
Geological Specimens
Banded Iron Formation
Mohs hardness: 5.5–7$130.13 -
Geological Specimens
Shatter Cone — Specimen Grade
Mohs hardness: varies$167.12 -
Geological Specimens
Amethyst Cathedral Geode — Half — Specimen Grade
Mohs hardness: 7$1,860.36 -
Geological Specimens
Desert Varnish Sandstone — Specimen Grade
Mohs hardness: 7$43.76 -
Geological Specimens
Conglomerate — Tillite
Mohs hardness: varies$60.15 -
Geological Specimens
Septarian Nodule — Polished Half — Specimen Grade
Mohs hardness: varies$136.93 -
Geological Specimens
Oolitic Limestone — Display Grade
Mohs hardness: 3$34.44 -
Geological Specimens
Fulgurite — Desert Glass Tube — Polished Face
Mohs hardness: 5.5–6$71.61 -
Geological Specimens
Radiolarite — Large Specimen
Mohs hardness: 6.5–7$21.93 -
Geological Specimens
Fulgurite — Desert Glass Tube — Display Grade
Mohs hardness: 5.5–6$81.44 -
Geological Specimens
Volcanic Bomb — Breadcrust
Mohs hardness: 5–6$102.88 -
Geological Specimens
Banded Iron Formation — Display Grade
Mohs hardness: 5.5–7$143.41 -
Geological Specimens
Obsidian — Mahogany Flow — Display Grade
Mohs hardness: 5–5.5$28.68 -
Geological Specimens
Pele’s Tears — Hawaiian — Specimen Grade
Mohs hardness: 5–5.5$59.91 -
Geological Specimens
Volcanic Bomb — Breadcrust — Display Grade
Mohs hardness: 5–6$144.35 -
Geological Specimens
Radiolarite — Polished Face
Mohs hardness: 6.5–7$40.53 -
Geological Specimens
Serpentinite — Polished Face
Mohs hardness: 3–4$37.31 -
Geological Specimens
Pele’s Tears — Hawaiian — Display Grade
Mohs hardness: 5–5.5$49.56 -
Geological Specimens
Radiolarite — Display Grade
Mohs hardness: 6.5–7$21.36